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Water
Soluble Carbomer Fo Thickening, Suspending & Stabilizing
 |
Description
|
 |
CARBOMER range are synthetic high molecular weight crosslinked polymers
of acrylic acid, which confirm to USP./INF. specifications as "CARBOMER"
|
Use |
|
CARBOMER range, are water soluble polymer use to :
|
Advantages |
|
| Thicken |
To produce wide range
of viscosities and flow properties. |
| Suspend |
Insoluble
ingredients. |
| Stabilize &
Emulsify |
Emulsions |
|
Grade
& Applications |
|
| Grades |
Solvent used in process |
Carbomer 941 / 971
(Benzene
free) |
Benzene
Cyclohexane
& ethyl acetate |
|
Gives permanent emulsion & Suspension at low viscosities. |
In ionic systems performance is better. |
|
More effective in hydrogen bonding mechanisms. |
Emulsion stabilizer. |
 |
|
Advantages |
|
| Thickning
efficiency |
High viscosities
at low concentrations. |
| Uniform performance |
Reproducibility
unattainable with natural gums. |
| Safety |
Years of
successful use of carbomers. |
| Temperature
stability |
Extended up to 750C
heating or cooling |
| Unaffected by aging |
Excellent self
life. |
| Microbial
resistance |
Resists bacterial
attack and does not support mold growth |
| Versatility |
Although
primarily used in aqueous systems with neutralization. It can
also be used in solvent systems, with or without neutralization.
|
| Elegance |
Smooth and
luxurious feeling. |
|
Chilling Properties |
|
On refrigeration CARBOMER gel can retaining the cool temperature
level for 48 hours to 72 hours. Low temperature necessary for
vaccines, toxoids, insulin and human albumin can be store in
pre-refrigerated CARBOMER gel, making it as a suitable medium for
transporting these medicines.
|
Specifications |
|
| Appearance |
White fine free
flowing powder. |
| Odour |
Mild acidic. |
| pH of 1% solution |
2.5 to 3 |
| Carboxylic content |
56% to 68% |
| Heavy metals |
Max. 2 ppm |
| Temperature
stability |
Up to 75°C |
|
Grades |
|
| Grades |
Viscosity (20°C,
0.5% Neutralization) |
| Carbomer 941 /
971 |
40,000 - 60,000
cps. |
|
Preparation of Aqueous Transparent Gel |
|
| D.M. water |
97.0 gm. |
| Carbomer (Any
Grade) |
0.5 gm. |
Sodium Hyroxide
(10%
solution) |
2.5 gm. |
|
Neutralizers Recommended |
|
| Sodium Hydroxide |
Potassium
Hydroxide |
| Triethanol Amine |
Triethyl amine,
other alkalies etc.. |
|
Toxicity |
|
CARBOMER is a high molecular weight polymer. It is not absorbed by
body tissues and is totally safe for human oral consumption. Test
for toxicological tolerance show that it does not have pronounced
physiological action and is non toxic.
|
Storage |
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Store in cool dry place. Keep away from moisture and water.
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Packing |
|
5 kg., 20 kg., net in corrugated box. |
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